Drying-kiln.



No. 640,79l. Patented Ian. 9, I900.

' F. R. MORRIS.

(Application filed. July 17, 1899.)

(No modal.)

THE NORRIS PETERS 40.. PNDTO-LITNQ. wasnmuton, o c.

UNITED STATES P TENT FFICE.

FULTON R. MORRIS, OF MILIVAUKEE, \VISGONSIN.

DRYlNG- KlLN.

SPECIFICATION forming part of Letters Patent No. 640,791, dated January9, 1900.

Application filed July 17,1899. Serial No. 724,085. (No model.)

- Milwaukee, in the county of Milwaukee and State of Visconsin, haveinvented a new and usefullmprovementin Drying-Kilns,of which thefollowing is a description, reference being bad to theaccompanyingdrawings, which are a part of this specification.

My invention relates to improvements in means for drying grain, malt, oranalogous material.

The improved devices are employed in a drying-kiln and combinedtherewith, the kiln being especially adapted for use in connection witha grain-elevator, alongside of which the kiln may be located and intowhich kiln the grain or malt to be dried may be discharged from theelevator.

The present invention relates to improvements that are especiallyadapted for use in a kiln like the one for which I applied for a patentby my application, Serial No. 697,010, filed in the Patent Office onNovember 21, 1898, though the present improvements may be employed inkilns of a different construction from those shown in that application.

The invention consists of the drying-kiln, its parts and combinations ofparts, as herein described and claimed, or the equivalent thereof.

In the drawings, Figure 1 is an elevation of the side of a bin in thekiln, with which bin my improved construction is embodied. Parts arebroken away for convenience of illustration. Fig. 2 is a horizontalsection of the kiln on line 2 2 of Fig. 1, only the parts belowandadjacent to the plane of the section being illustrated, the features ofthe construction at a greater distance below the plane of the sectionbeing omitted.

In a kiln buildingadapted for drying grain, malt, 850., a number ofdrying-kilns may be employed; but I have deemed it sufficient toillustrate only one kiln, as this is sufficient to exhibit myimprovements. As considerable heat is sometimes required in these kilns,it is desirable to construct them principally of metal to obviate theirdestruction by fire.

A grain-bin in a kiln embodying my improvements is convenientlyconstructed with imperforate side walls 5 5 and end Walls 6 6 of heavysheet metal; also, end walls of the kiln 6 6, at a distance from andopposite the walls 6 6, are continued at the sides of the kiln around tothe walls 5 5, forming continuations thereof, and form a supplyair-passage A and exhaust air-passages B at the respective ends of thebin. The side walls near their lower extremities are inclined inwardly,forming a hopper-like construction provided with a discharging-mouthhaving a slidable gate '7. Such a kiln is conveniently supported at adistance above the floor of the dry-kiln building by posts or framing 88, resting onany suitable foundation. In a bin constructed substantiallyin the manner described in my previous application for a patent,hereinbefore mentioned, a large number of air-ducts 9 9' are provided,extending from end to end or from side to side of the bin, whichairducts are constructed with perforated sides and tops and open at thebottom, these airducts being adapted to permit of the passage of airtherethrough, coming in at one end of the ducts and passing therefromthrough their perforated walls and tops into the surroundair from thegrain through alternate series of these ducts 9 9, the ducts 9 9 beingopen at one end into a supply air-passage A and the system of steam orhot-air pipes 10 10, leading from a source of steam or hot-air supplyinto and through the air-ducts 9 9, whereby heat by radiation from thesepipes is supplied in the air-ducts 9 9 for Warming the incoming air asit enters these ducts and passes therefrom into the surrounding grain.

My present invention consists in further means for ventilating anddrying the material in the bin, and these means are provided in and by alining 12 to the side Walls of the bin. This lining consists of a sheetof open fine-mesh woven wire or perforated metal opposite the innersurface of the side walls and secured thereto at a distance therefrom,conveniently by means of metal bars 13 13, pref= erably flangedbars,secured to the walls of themg grain and permitting of the escape ofthe it up againstthe pressure thereon of the grain or other material inthe bin. These stnddingbars extend from the bottom of the bin upwardly,forming exhaust air-ducts 14 between the walls 5 of the bin and thelining 12 and these studding-bars. These air-duets are open at theirupper ends, the upper edges of the perforated lining 12 being turnedover and secured to the walls 5 5 for holding the upper edges of thelining in position, the perforations providing ample passages or escapefor the air therethrough. If this perforated lining 12 were employed inthis manner in a bin not having the air-ducts 9 9 and 9' 9' or similarair-ducts through the bin medially, it might be desirable to provideair-ports into the air-duets 14:, near the lower extremity of the bin,to provide for a supply of fresh air and a draft upwardly through theducts 14 or the spaces between the walls of the bin and the lining, andalso in such a bin not having air-ducts medially thereof it would bedesirable to provide this lining at the vends of the bin also, so thatthe entire bin would be lined, and thus provided with an air spaceentirely around it; but as this method of lining the bin in agrain-drying kiln is most desirably employed in connection with meatthose sides, because the air-duets 9 9 andv 9' 9 extend through the endwalls, so that: there will be no considerable amount of grain f ormaterial lying against the end walls of the 'bin that will not besufficiently ventilated by The flat vertical and inclined side walls ofthe bin 1 that are not thus pierced by the air-ducts 99; and 9 9' (andalongside of which grain or other materialin the bin is likely to becomemassed l and being nnventilated will retain moisture and is liable tobespoiled) are, by providing this perforated lining 12 at a distance frommeans of the ducts 9 9 and 9 9'.

the walls, made to serve as a means of ventilation in connection withthe ducts 9 9, whereby air taken into the bin centrally by these ducts 99 is permitted to escape through spoiled against the otherwise flatimpervious walls of the bin.

In the drawings,15 15 are doors hinged to the bin and connected togetherby the rod 16, whereby they are adapted to close or partially open theducts 9 9', thus providing means for regulating the supply of airthrough those ducts. i

What Iclaim as my invention is- 1. In a drying-kiln, the combinationwith a bin having imperforateovertical and inwardlyinclined downwardwalls of a perforated lining, parallel with and at a little distancefrom and secured to said walls providing an airspace between suchimperforate walls of the bin and said perforated lining into which aireanescape through said perforated lining from within the bin.

2. In a drying-kiln, the combination with the imperforate vertical andobliquely-dis posed wallsof a bin, of a perforated lining on the insideof said imperforate bin-walls secured thereto at a little distancetherefrom, and upwardly-extending bars at short distances apart servingas partitions and sup ports in the space between said walls and saidlining and forming upwardly-extending exhaust-air ducts in said space.

3. A bin in a drying-kiln, comprising imperforate side walls, perforatelinings at a little distance on the inside from but adjacent to saidimperforate walls forming air-spaces between said'imperforate walls andsaid linings, and intakeair-ducts across said bin extending at one endor the other through the end walls of the bin, said ducts beingperforated to permit air to-escape therefrom into the bin. p

In testimony whereof I aiiix my signature in presence of two witnesses.

' FULTON R.l\jlORRlS.

Witnesses:

0. T. BENEDICT, ANNA V. FAUST.

